Reply to post: Re: Laserscan HRD-1

A steam punk VDU ?

Alan J. Wylie

Re: Laserscan HRD-1

> "Spot size: 200 microns (on screen?)"

> The brochure claims 20 micros. 5000x 7000 pixels. That's laser printer territory (in 1973 !).

I think the 20 microns quoted was on the photochromic film, then a 10x ,magnification when projected onto the screen.

> huge storage issue

...

> what happened to LS?

LSL had a vector approach to drawing and digitising. Once chips became cheap enough, you could just scan the whole document into memory in one go and throw computing power at it. PGH's web page I quoted above has a history of the company. Note the famous people that came to visit: Prince Philip, Maggie T

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